package com.atguigu.config;

import com.atguigu.bean.Yellow;
import com.mchange.v2.c3p0.ComboPooledDataSource;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.context.EmbeddedValueResolverAware;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.context.annotation.Profile;
import org.springframework.context.annotation.PropertySource;
import org.springframework.util.StringValueResolver;

import javax.sql.DataSource;
import java.beans.PropertyVetoException;

/** Profile:Spring为我们提供的可以根据当前环境，动态的激活和切换一系列组件的功能
 * @Profile:指定组件在哪个环境的情况下才能被注册到容器中 不指定，任何环境下都能注册这个组件
 *          加了环境标识的bean，只有这个环境被激活的时候才能注册到容器中，默认是default环境
 *          如果写在配置类上，只有是指定的环境的时候，整个配置类里面的所有配置才能开始生效
 *           没有标注环境标识的bean，在任何环境下都是加载的。
 * @author Honglixi
 * @create 2021-03-27 13:48
 */
@PropertySource("classpath:/dbconfig.properties")
@Configuration
public class MainConfigOfProfile implements EmbeddedValueResolverAware {

    private StringValueResolver valueResolver;
    private String s;
    @Value("${db.user}")
    private String user;

    @Profile("test")
    @Bean
    public Yellow yellow(){
        return new Yellow();
    }

    @Profile("default")
    @Bean("datasource")
    public DataSource dataSource(@Value("${db.password}")String pwd) throws Exception {
        ComboPooledDataSource dataSource = new ComboPooledDataSource();
        dataSource.setUser(user);
        dataSource.setPassword(pwd);
        dataSource.setJdbcUrl("jdbc:mysql://localhost:3306/ssm");
        dataSource.setDriverClass(s);
        return dataSource;
    }
    @Profile("test")
    @Bean("testDataSource")
    public DataSource dataSourceTest(@Value("${db.password}")String pwd) throws Exception {
        ComboPooledDataSource dataSource = new ComboPooledDataSource();
        dataSource.setUser(user);
        dataSource.setPassword(pwd);
        dataSource.setJdbcUrl("jdbc:mysql://localhost:3306/eesy1");
        dataSource.setDriverClass(s);
        return dataSource;
    }

    @Profile("dev")
    @Bean("devDataSource")
    public DataSource dataSourceDev(@Value("${db.password}")String pwd) throws Exception {
        ComboPooledDataSource dataSource = new ComboPooledDataSource();
        dataSource.setUser(user);
        dataSource.setPassword(pwd);
        dataSource.setJdbcUrl("jdbc:mysql://localhost:3306/mysql");
        dataSource.setDriverClass(s);
        return dataSource;
    }

    @Profile("prod")
    @Bean("prodDataSource")
    public DataSource dataSourceProd(@Value("${db.password}")String pwd) throws Exception {
        ComboPooledDataSource dataSource = new ComboPooledDataSource();
        dataSource.setUser(user);
        dataSource.setPassword(pwd);
        dataSource.setJdbcUrl("jdbc:mysql://localhost:3306/myemployees");
        String s = valueResolver.resolveStringValue("${db.driverClass}");
        dataSource.setDriverClass(s);
        return dataSource;
    }

    @Override
    public void setEmbeddedValueResolver(StringValueResolver resolver) {
        this.valueResolver = resolver;
        s = valueResolver.resolveStringValue("${db.driverClass}");
    }
}
